From nobody Mon Feb 9 04:45:11 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1572602872; cv=none; d=zoho.com; s=zohoarc; b=HQ5jimVtO73N7RfvaNnSDGvyOLPwDbNuZX8ZQgjY28O8+ipM401K66QLNQtplwwZG7iujiKnI8ciNYzMKjY9MexoKiA1kjy61gLiSkNyo9kpuhC/O6ZK5yR6F7Cu4UF5XD0b+A99STO1g/352w1rdAwguH2T3JTiYewanRLssSU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1572602872; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=tK6nGHtnBLwNSehBsJRlYIHpvmXJp/Go8FcoP4eXX78=; b=op21vluvXIjTWExDEQgSWNgOmsBLmsqBc355xJn5SCanjElhp8l67o/1gns4CPx3iulloxemxMM6SL6KrlsapZmoIRRhyMiq4xCHwJ1TyTa+YGKLAIFHRN0V+5MpugOTKwYg3SuGFgIeTx8aC6TypfAshphYC5v24wEmQDFDoU4= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1572602872845636.3513743015168; Fri, 1 Nov 2019 03:07:52 -0700 (PDT) Received: from localhost ([::1]:37216 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iQTqR-0003nb-M0 for importer@patchew.org; Fri, 01 Nov 2019 06:07:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40377) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iQTjX-000743-2l for qemu-devel@nongnu.org; Fri, 01 Nov 2019 06:00:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iQTjV-0005FX-Gh for qemu-devel@nongnu.org; Fri, 01 Nov 2019 06:00:42 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:33183 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iQTjV-0005Ax-CQ for qemu-devel@nongnu.org; Fri, 01 Nov 2019 06:00:41 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-415-2yKPsUPFNHuyRrIFuM5DRg-1; Fri, 01 Nov 2019 06:00:38 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9BA1C800D49; Fri, 1 Nov 2019 10:00:37 +0000 (UTC) Received: from localhost (ovpn-117-28.ams2.redhat.com [10.36.117.28]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B0DC11001B07; Fri, 1 Nov 2019 10:00:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572602440; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tK6nGHtnBLwNSehBsJRlYIHpvmXJp/Go8FcoP4eXX78=; b=R1sIabNKXst6FGGuTfK8UnjtOlLOiiIYERCrCSLNBSsoYlwn0GYj1u8g/f6gime8Qr3A90 ZVD+OsE62kgacSl6T6x7769RUDRBK6xhKtxP2TyuYI+ppDMG7RmmoteKEmAxZq/vJ5FvAB x+TsfvSsR108ty3sRyuBgzYb99hgedg= From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH for-4.2 2/4] block: Make wait/mark serialising requests public Date: Fri, 1 Nov 2019 11:00:17 +0100 Message-Id: <20191101100019.9512-3-mreitz@redhat.com> In-Reply-To: <20191101100019.9512-1-mreitz@redhat.com> References: <20191101100019.9512-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: 2yKPsUPFNHuyRrIFuM5DRg-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Anton Nefedov , qemu-devel@nongnu.org, Max Reitz , Vladimir Sementsov-Ogievskiy , Stefan Hajnoczi Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Make both bdrv_mark_request_serialising() and bdrv_wait_serialising_requests() public so they can be used from block drivers. Signed-off-by: Max Reitz --- include/block/block_int.h | 3 +++ block/io.c | 24 ++++++++++++------------ 2 files changed, 15 insertions(+), 12 deletions(-) diff --git a/include/block/block_int.h b/include/block/block_int.h index 02dc0034a2..32fa323b63 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -999,6 +999,9 @@ extern unsigned int bdrv_drain_all_count; void bdrv_apply_subtree_drain(BdrvChild *child, BlockDriverState *new_pare= nt); void bdrv_unapply_subtree_drain(BdrvChild *child, BlockDriverState *old_pa= rent); =20 +bool coroutine_fn bdrv_wait_serialising_requests(BdrvTrackedRequest *self); +void bdrv_mark_request_serialising(BdrvTrackedRequest *req, uint64_t align= ); + int get_tmp_filename(char *filename, int size); BlockDriver *bdrv_probe_all(const uint8_t *buf, int buf_size, const char *filename); diff --git a/block/io.c b/block/io.c index 02659f994d..039c0d49c9 100644 --- a/block/io.c +++ b/block/io.c @@ -715,7 +715,7 @@ static void tracked_request_begin(BdrvTrackedRequest *r= eq, qemu_co_mutex_unlock(&bs->reqs_lock); } =20 -static void mark_request_serialising(BdrvTrackedRequest *req, uint64_t ali= gn) +void bdrv_mark_request_serialising(BdrvTrackedRequest *req, uint64_t align) { int64_t overlap_offset =3D req->offset & ~(align - 1); uint64_t overlap_bytes =3D ROUND_UP(req->offset + req->bytes, align) @@ -805,7 +805,7 @@ void bdrv_dec_in_flight(BlockDriverState *bs) bdrv_wakeup(bs); } =20 -static bool coroutine_fn wait_serialising_requests(BdrvTrackedRequest *sel= f) +bool coroutine_fn bdrv_wait_serialising_requests(BdrvTrackedRequest *self) { BlockDriverState *bs =3D self->bs; BdrvTrackedRequest *req; @@ -1437,14 +1437,14 @@ static int coroutine_fn bdrv_aligned_preadv(BdrvChi= ld *child, * with each other for the same cluster. For example, in copy-on-= read * it ensures that the CoR read and write operations are atomic and * guest writes cannot interleave between them. */ - mark_request_serialising(req, bdrv_get_cluster_size(bs)); + bdrv_mark_request_serialising(req, bdrv_get_cluster_size(bs)); } =20 /* BDRV_REQ_SERIALISING is only for write operation */ assert(!(flags & BDRV_REQ_SERIALISING)); =20 if (!(flags & BDRV_REQ_NO_SERIALISING)) { - wait_serialising_requests(req); + bdrv_wait_serialising_requests(req); } =20 if (flags & BDRV_REQ_COPY_ON_READ) { @@ -1841,10 +1841,10 @@ bdrv_co_write_req_prepare(BdrvChild *child, int64_t= offset, uint64_t bytes, assert(!(flags & ~BDRV_REQ_MASK)); =20 if (flags & BDRV_REQ_SERIALISING) { - mark_request_serialising(req, bdrv_get_cluster_size(bs)); + bdrv_mark_request_serialising(req, bdrv_get_cluster_size(bs)); } =20 - waited =3D wait_serialising_requests(req); + waited =3D bdrv_wait_serialising_requests(req); =20 assert(!waited || !req->serialising || is_request_serialising_and_aligned(req)); @@ -2008,8 +2008,8 @@ static int coroutine_fn bdrv_co_do_zero_pwritev(BdrvC= hild *child, =20 padding =3D bdrv_init_padding(bs, offset, bytes, &pad); if (padding) { - mark_request_serialising(req, align); - wait_serialising_requests(req); + bdrv_mark_request_serialising(req, align); + bdrv_wait_serialising_requests(req); =20 bdrv_padding_rmw_read(child, req, &pad, true); =20 @@ -2111,8 +2111,8 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *chil= d, } =20 if (bdrv_pad_request(bs, &qiov, &qiov_offset, &offset, &bytes, &pad)) { - mark_request_serialising(&req, align); - wait_serialising_requests(&req); + bdrv_mark_request_serialising(&req, align); + bdrv_wait_serialising_requests(&req); bdrv_padding_rmw_read(child, &req, &pad, false); } =20 @@ -3205,7 +3205,7 @@ static int coroutine_fn bdrv_co_copy_range_internal( /* BDRV_REQ_SERIALISING is only for write operation */ assert(!(read_flags & BDRV_REQ_SERIALISING)); if (!(read_flags & BDRV_REQ_NO_SERIALISING)) { - wait_serialising_requests(&req); + bdrv_wait_serialising_requests(&req); } =20 ret =3D src->bs->drv->bdrv_co_copy_range_from(src->bs, @@ -3336,7 +3336,7 @@ int coroutine_fn bdrv_co_truncate(BdrvChild *child, i= nt64_t offset, bool exact, * new area, we need to make sure that no write requests are made to it * concurrently or they might be overwritten by preallocation. */ if (new_bytes) { - mark_request_serialising(&req, 1); + bdrv_mark_request_serialising(&req, 1); } if (bs->read_only) { error_setg(errp, "Image is read-only"); --=20 2.21.0